116 AMERICAN FERN JOURNAL 
A smaller colony not over a mile away growing under 
about the same ecological conditions showed 10 obli- 
quum to 7 dissectum in a space about. 8 x 10 feet. 
In each case all plants that were not typical obliquum 
were regarded as belonging to the dissectum group. 
Another observer taking a different view-point might 
arrive at an entirely different result after counting the 
Same colonies of plants. We shall get nowhere in the 
matter of determining the frequency of occurrence of 
the two species until some definite standard of classi- 
fication is adopted. 
If dissectum is a valid species, will some one please 
tell us just how deep the laciniations must be to make 
it so? If it is a “sterile mutant” which is cause and 
which result— is it a mutant because it is sterile or 
sterile because it is a mutant-and just what degree of 
sterility must a plant possess and what degree of lacinia- 
tion must it have to become a mutant?—L. S. Hopkins, 
Kent, O. 
Some Frrns SEEn 1n CALIFORNIA—On July 3rd and 
4th Mr. Robert Kessler and the writer went for a hike 
into the back part of the San Gabriel Range. Starting 
from Switzer’s Camp, in the Arroyo Seco we went, via 
Barley Flats to Pine Flats, returning by way of the 
Trail Fork and West Fork of the San Gabriel River, 
around San Gabriel Peak, Mt. Markham and Mt. Lowe, 
to Alpine Tavern, on Mt. Lowe, where we took the 
trolley for Los Angeles. We did not collect many ferns 
but noted the following. 
Filix fragilis (L.) Gilib. In a springy place in the 
south wall of Tejunga Canyon. 
Polystichum munitum (Kaulf.) Presl. Frequent above 
900 m. elevation. A single plant strongly resembling 
the var. inciso-serratum D. C. Eaton, except in that it 
